<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      .box {
        width: 300px;
        height: 300px;
        border: 1px solid;
        /* display: inline-block; */
      }
    </style>
  </head>
  <body>
    <div class="box">div</div>
    <span class="box">span1</span><span class="box">span2</span>
  </body>
</html>
